On 31 Mar 2008, at 11:52, Ken Murchison wrote: > How can > lmtpd be intelligent enough to know that the forwarded address will > cause the message to come back? There's no way to do that, but one could insert a header, e.g, "X- Sieve-Redirect". Maybe the value would be a random string which was also saved in the duplicate DB. :wes